Yes, the spindles are different, they are pressed into the housing, to swap these two requires pulling the spindles and pressing them in. I would guess it is quite a job swapping the spindles, but still could be done. I certainly would not want to go through all of what it takes to swap the parts around, but it can be done. My original question was about them being plug and play as far as the interchangability of the parts, it has been answered by AAM, they are interchangable. If someone could not find a complete axle to swap, this is the only route to get it done. Lots of work to do it, but could be done. I have a friend who just completed this a few days ago, they came to me to use my press for the spindle, it has all turned out good, axle is done.
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